Question

como posso resolver?

Answer 1

$\frac{xy - {x}^{2} }{ \sqrt{y} }$
$\frac{ - 0.1 \times 0.01 - 0.1^{2} }{ \sqrt{0.01} }$
$\frac{ - 0.001 - 0.01}{ 0.1 } = \frac{ - 0.001}{0.1} - \frac{0.01}{0.1}$
$- 0.01 - 0.1 = - 0.11$